Overview
The OPA388IDR, manufactured by Texas Instruments, is a precision zero-drift operational amplifier designed for applications requiring high accuracy and stability. This single-channel amplifier is part of the OPAx388 series and is housed in an SOIC-8 package. It is ideal for driving high-precision analog-to-digital converters (ADCs) or buffering high-resolution digital-to-analog converters (DACs). The OPA388IDR is known for its ultra-low noise, zero-drift, and zero-crossover characteristics, making it a competitive choice in the precision amplifier market. Its target users include engineers and designers in industrial automation, medical instrumentation, and test and measurement systems.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Gain Bandwidth Product (GBP) | 10 | MHz | |
| Slew Rate (SR) | 5 | V/µs | |
| Common Mode Rejection Ratio (CMRR) | 124 to 138 | dB | |
| Output Current per Channel | 60 | mA | |
| Input Bias Current (Ib) | 700 | pA | |
| Input Offset Voltage (Vos) | 0.005 | mV | |
| Input Voltage Noise Density (en) | 7 | nV/√Hz | |
| Supply Voltage (Max) | 5.5 | V | |
| Supply Voltage (Min) | 2.5 | V | |
| Operating Supply Current | 1.9 | mA | |
| Operating Temperature Range | -40 to +125 | °C | |
| Package | SOIC-8 | Surface Mount |
Key Features
- Zero-drift architecture ensures minimal offset voltage and drift over time.
- Rail-to-rail input and output operation for maximum dynamic range.
- EMI-hardened design reduces susceptibility to electromagnetic interference.
- High capacitive load drive capability for stable performance in complex circuits.
- Low noise and fast settling time enhance precision in signal processing applications.
Applications
The OPA388IDR is widely used in applications requiring high precision and stability. Typical use cases include industrial automation systems, medical instrumentation such as ECG and blood glucose monitors, and test and measurement equipment like data acquisition systems. Its zero-drift and low-noise characteristics make it particularly suitable for sensor signal conditioning and ADC/DAC interfacing in high-resolution systems.
Q & A
1. What is the gain bandwidth product of the OPA388IDR?
The gain bandwidth product (GBP) of the OPA388IDR is 10 MHz.
2. Does the OPA388IDR support rail-to-rail operation?
Yes, the OPA388IDR supports both rail-to-rail input and output operation.
3. What is the input offset voltage of the OPA388IDR?
The input offset voltage is typically 0.005 mV.
4. Can the OPA388IDR operate in harsh environments?
Yes, it operates over a temperature range of -40°C to +125°C, making it suitable for industrial and automotive applications.
5. What is the slew rate of the OPA388IDR?
The slew rate is 5 V/µs.
6. Is the OPA388IDR suitable for low-noise applications?
Yes, it features low input voltage noise density of 7 nV/√Hz, making it ideal for low-noise designs.
7. What is the supply voltage range for the OPA388IDR?
The supply voltage ranges from 2.5 V to 5.5 V.
8. Does the OPA388IDR have a shutdown feature?
No, the OPA388IDR does not include a shutdown feature.
9. What package does the OPA388IDR come in?
It is available in an SOIC-8 surface-mount package.
10. Is the OPA388IDR RoHS compliant?
Yes, the OPA388IDR is RoHS compliant.
